CI: Add scheduled release workflow

[jeckersb]

Adapted from the bootc-dev/bootc scheduled release workflow.

Signed-off-by: John Eckersberg jeckersb@redhat.com

[jeckersb]

Notable differences between this and the bootc version, didn't want to put this in the commit message incase we want to change any of it:

• bootc runs every Monday, this runs on the 1st of the month, weekly feels excessive here (can always run manually if desired)
• I removed all of the app token stuff which doesn't seem to be necessary anymore? Per https://github.com/peter-evans/create-pull-request#token I think we can just use the default GITHUB_TOKEN. Not at all positive about that though.
• I specifically excluded composefs-capi from the version bump since it doesn't match the rest of it and I'm guessing we want that to match the actual C API version.
• There's no GPG signing, it would be easy to add but until now we haven't GPG signed composefs-rs releases so this maintains the status quo. RFE if we want to add that in a followup.

I tested all of this in my fork, seems to work, see for example https://github.com/jeckersb/composefs-rs/actions/runs/31035639379 which created jeckersb#3.

[cgwalters]

Honestly I am not super happy with the bootc one, having it only half-automated where it just creates the draft doesn't feel seamless enough. I think we should probably have the release driven through an issue where we edit release notes there or so.

I removed all of the app token stuff which doesn't seem to be necessary anymore? Per https://github.com/peter-evans/create-pull-request#token I think we can just use the default GITHUB_TOKEN. Not at all positive about that though.

That depends on the repo, we don't have this checked here

[cgwalters]

Sure we can try it though

[jeckersb]

Also worth noting this only does the PR creation and there's a whole other workflow that does the actual release, that one (or some modified and/or rewritten equivalent) will need to be brought over here too. For the time being we can use this to generate the PR and then once it lands we can do a manual release for 0.8 so we don't delay any longer.

[jeckersb]

Honestly I am not super happy with the bootc one, having it only half-automated where it just creates the draft doesn't feel seamless enough. I think we should probably have the release driven through an issue where we edit release notes there or so.

I removed all of the app token stuff which doesn't seem to be necessary anymore? Per https://github.com/peter-evans/create-pull-request#token I think we can just use the default GITHUB_TOKEN. Not at all positive about that though.

That depends on the repo, we don't have this checked here

It does not work without the box checked, see https://github.com/composefs/composefs-rs/actions/runs/31126157009